Cassopolis, MI -- U.S. village in Michigan Population (2000): 1740 Housing Units (2000): 780 Land area (2000): 1.750261 sq. miles (4.533156 sq. km) Water area (2000): 0.179146 sq. miles (0.463987 sq. km) Total area (2000): 1.929407 sq. miles (4.997143 sq. km) FIPS code: 13900 Located within: Michigan (MI), FIPS 26 Location: 41.910713 N, 86.007885 W ZIP Codes (1990): 49031 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Cassopolis, MI Cassopolis